Tissues

Question 1

Name the specialized function of nervous tissue?

Answer 1

Generate, receive,process and transmit nerve impulses

Also involves in coordinating body activities

Question 2

Name the germ layer form which the nervous tissue is originated

Answer 2

Ectoderm

Question 3

Name 2 types of cells in the nervous tissue?

Answer 3

Neurons

Glial cells/ neuroglia cells

Question 4

Name the main type of cell in the nervous tissue

Answer 4

Neurons

Question 5

Name the most abundant type of cell in the nervous tissue

Answer 5

Glial cells

Question 6

Name the basic structural unit of the nervous tissue

Answer 6

Neurons

Question 7

Name the basic functional unit of the nervous tissue

Answer 7

Reflex arc

Question 8

Name the function of neuron

Answer 8

Receive, generate and transmit nerve impulses

Question 9

Name 3 types of neurons

Answer 9

Sensory neuron
Inter neuron
Motor neuron

Question 10

Function of,

1) sensory neuron
2) inter neuron
3) motor neuron

Answer 10

1) transmit impulse from sensory receptors to the central nervous system
2) connects sensory neuron and motor neuron
3) transmit nerve impulses from CNS to the effector organs

Question 11

Structure of motor neuron

Answer 11

Shape of the neuron 
Cell body
Organelles present and absent in the cell body
Dendrites 
Axon and myelin sheath 
Telodendria

Question 12

Name the neuroglia cells which involve in forming the myelin sheath

Answer 12

Schwann cells

Question 13

Function of myelin sheath

Answer 13

Speed of the nerve impulse is increased

Question 14

Function of the dendrites and cell body

Answer 14

Used to receive nerve impulse from other neurons

Question 15

Function of axon

Answer 15

Used to transmit nerve impulse to other neurons , to cells or to muscles

Question 16

What forms a nerve

Answer 16

Axons bundled together to form a nerve

Question 17

Name 2 main factors influencing the speed of the nerve impulse

Answer 17

Presence or absence of myelin sheath

Diameter of axon ( d increase speed increase)

Question 18

State two types of nerves

Answer 18

Cranial nerve - nerves originated from the brain

Spinal nerve- nerve originated from the spinal chord

Question 19

State the no of pairs of ,
1 ) cranial nerves
2) spinal nerves

Answer 19

1) 12

2) 31

Question 20

State 3 types of nerves depending upon their structure?

Answer 20

Sensory nerve
Motor nerves
Mixed nerves

Question 21

What type of nerve is the spinal nerve?

Answer 21

Mixed nerve

Question 22

State the function and composition of each nerve type?

1) sensory nerve
2) motor nerve
3) mixed nerve

Answer 22

1) only sensory neuron
Transmit impulse from sensory receptors to the CNS

2) only motor neuron
Transmit impulse from CNS to the effector organs

3) both sensory and motor neuron
Transmit impulse both towards and away from the CNS

Question 23

State 3 neuron in the reflex arc?

Answer 23

Sensory neuron
Inter neuron
Motor neuron

Question 24

What is a reflex arc?

Answer 24

It is a neuronal pathway which connects sensory receptors and effector organs through the CNS

Question 25

State 4 functions of neuroglia cells?

Answer 25

Nourishment of nerve cells
Insulation of nerve cells
Replenishing neuron
Modulate neuron function